Leviticus 23:40-43

Leeser(i) 40 And ye shall take unto yourselves on the first day the fruit of the tree hadar, branches of palm-trees, and the boughs of the myrtle-tree, and willows of the brook: and ye shall rejoice before the Lord your God seven days. 41 And ye shall keep it as a feast unto the Lord seven days in the year: it shall be a statute for ever throughout your generations; in the seventh month shall ye celebrate it. 42 In booths shall ye dwell seven days; all that are Israelites born shall dwell in booths. 43 In order that your generations may know, that I caused the children of Israel to dwell in booths, when I brought them forth out of the land of Egypt: I am the Lord your God.